Boiler flue gas purification and dust removal device

Abstract

The utility model provides a boiler flue gas purification and dust removal device, belongs to the technical field of flue gas purification, and solves the technical problems that an internal rotating part or a filtering structure is easily blocked by dust and the filtering effect is influenced in the conventional wind suction filtering mode. A boiler flue gas purification and dust removal device comprises a dust removal frame and a filtering centrifugal machine fixed to the dust removal frame, a steam dust removal tank is fixed to the dust removal frame, a flue gas inlet connector communicated with the interior is fixed to the steam dust removal tank, a mixed liquid cavity is formed in the dust removal frame, and the mixed liquid cavity is communicated with a bottom opening of the steam dust removal tank. A dust removal assembly is arranged in the steam dust removal tank, a steam generation cavity is formed in the dust removal frame, and a steam assembly is arranged in the steam generation cavity. The flue gas purification and dust removal device has the advantages that flue gas purification and dust removal are completed in a steam dust removal mode, harmful gas in flue gas is removed, sediments in the steam generation cavity are cleaned, the service life is prolonged, and the working effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flue gas purification and relates to a flue gas purification and dust removal device, in particular to a boiler flue gas purification and dust removal device. Background Art

[0002] A large amount of flue gas is generated during the operation of the boiler in a thermal power plant. The flue gas from the boiler contains a lot of tiny particles of dust. If it is directly discharged into the atmosphere, it will seriously pollute the air and cause respiratory diseases. Therefore, the boiler flue gas needs to be dust-removed before being discharged into the air.

[0003] After searching, it was found that a Chinese patent document discloses a boiler flue gas dust removal device with a high degree of purification [Application number: 202220581418.6; Publication number: CN 217490159 U]. A boiler flue gas dust removal device with a high degree of purification includes a side body, the top of the side body is fixedly connected to a fixed fan, the side of the fixed fan is fixedly connected to a side suction plate, the inside of the side body is fixedly connected to an inclined plate, the inside of the inclined plate is provided with a filter trough, the side of the side body is provided with a discharge outlet, the side of the side body is fixedly connected to a side frame, the side frame is located below the discharge outlet, the inside of the side body is provided with a slide, the inside of the slide is slidably connected to a filter frame, and the bottom of the side body is fixedly connected to a support base. Through the mutual coordination between the fixed fan, the inclined plate, the filter frame and the discharge outlet, the staff can filter and use it, thereby facilitating the staff to filter it, thereby facilitating the staff to use it.

[0004] Although this patent facilitates the filtering of smoke by the staff through the coordinated use of a fixed fan, an inclined plate, a filter frame and an exhaust port, the patent uses wind suction for filtering, which limits the filtering effect, and the internal rotating parts or filter structures are easily clogged by dust, affecting the filtering effect. The internal parts need to be cleaned or replaced regularly, and the harmful gases in the smoke cannot be removed. Utility Model Content

[0005] The purpose of this utility model is to address the above-mentioned problems in the existing technology and propose a boiler flue gas purification and dust removal device. The technical problem to be solved by this utility model is: how to complete the flue gas purification and dust removal work by steam dust removal, remove harmful gases in the flue gas, and clean the sediment in the steam generating chamber to improve the service life and working effect.

[0006] The purpose of this utility model can be achieved through the following technical solutions:

[0007] A boiler flue gas purification and dust removal device comprises a dust removal frame, a filtering centrifuge fixed on the dust removal frame, a steam dust removal tank fixed on the dust removal frame, a smoke inlet interface connected to the inside fixed on the steam dust removal tank, a mixed liquid chamber provided in the dust removal frame, the mixed liquid chamber is connected to the bottom opening of the steam dust removal tank, a dust removal assembly is provided in the steam dust removal tank, a steam generating chamber is provided in the dust removal frame, a steam generating chamber is provided in the steam generating chamber, a pair of steam inlets connected to the inside are fixed on the steam dust removal tank, both steam inlets are connected to the steam assembly, a foreign matter cleaning assembly is provided in the steam generating chamber, and a water vapor separator is fixed to the top tank opening of the steam dust removal tank.

[0008] The working principle of the utility model is as follows: high-temperature steam can be generated in the steam generating chamber through the steam component, and then the high-temperature steam is transported into the steam dust removal tank, so that the moisture in the high-temperature steam adheres to or entrains the particles and harmful substances in the flue gas, so that the mass of the moisture increases and falls into the mixed liquid chamber, and in the process of steam dust removal, the harmful gases in the flue gas are also removed, and then the mixed liquid is flowed from the mixed liquid chamber into the filtering centrifuge, and the mixed liquid is separated into solid and liquid by the filtering centrifuge, so that the particles and harmful substances in the mixed liquid are removed, completing the work of flue gas purification and dust removal, and the sediment in the steam generating chamber is cleaned by the foreign matter cleaning component, thereby improving the service life and working effect.

[0009] The dust removal assembly includes a plurality of arranged water distribution plates fixed in a steam dust removal tank. A liquid-steam network is fixed in the steam dust removal tank. The liquid-steam network is located at the bottom of the water distribution plates.

[0010] By adopting the above structure, the mixed liquid that has been initially freed of harmful gases can be evenly dropped onto the liquid-vapor net through the water distribution plate, thereby reducing the surface tension of the water body, increasing the time the water body remains on the liquid-vapor net, improving the reaction effect of the secondary steam, and completing the removal of secondary harmful gases from the mixed liquid.

[0011] The steam component includes a steam gathering tank opened on the top of the steam generating chamber, a halogen heating tube fixed in the steam generating chamber, and a steam pipe connected to the steam gathering tank fixed on the dust removal rack. One end of the steam pipe is divided into multiple pipes connected to the corresponding steam inlets.

[0012] With the above structure, the water in the steam generating chamber can be heated and heated by the halogen heating tube to generate steam, and then the steam is sent into the steam dust removal tank through the cooperation of the steam gathering tank and the steam pipe to realize the normal steam dust removal work.

[0013] The liquid outlet of the filtering centrifuge is connected to the steam generating chamber through a pipeline.

[0014] By adopting the above structure, the water from which harmful substances and particles are removed by the filtering centrifuge can be input into the steam generating chamber for repeated use, thereby reducing resource loss.

[0015] The foreign matter cleaning assembly includes a foreign matter gathering groove opened at the bottom of the steam generating chamber, a feeding screw rotatably connected in the foreign matter gathering groove, a foreign matter cleaning port connected to one end of the foreign matter gathering groove opened on the dust removal frame, a sealing plug is filled in the foreign matter cleaning port, and a driving wheel is rotatably connected to the dust removal frame, and the driving wheel and the feeding screw are coaxially fixedly connected.

[0016] By adopting the above structure, the water in the steam generating chamber can be discharged, and then the sealing plug can be taken out. The feeding screw can be driven to rotate by the driving wheel. After the feeding screw rotates, the sediment deposited in the foreign matter gathering tank will be pushed until the sediment is pushed out from the foreign matter cleaning port, thereby completing the cleaning of the sediment in the steam generating chamber.

[0017] A water supply interface connected to the steam generating chamber is fixed on the dust removal frame.

[0018] With the above structure, the water in the steam generating chamber can be replenished or discharged through the water replenishment interface.

[0019] Compared with the existing technology, this boiler flue gas purification and dust removal device has the following advantages:

[0020] 1. High-temperature steam is generated in the steam generating chamber through the steam component, and then transported into the steam dust removal tank through the high-temperature steam, so that the moisture in the high-temperature steam adheres to or entrains the particles and harmful substances in the flue gas, so that the moisture mass increases and falls into the mixed liquid chamber. In the process of steam dust removal, the harmful gases in the flue gas are also removed. Then, the mixed liquid is flowed from the mixed liquid chamber into the filter centrifuge, and the mixed liquid is separated into solid and liquid by the filter centrifuge, so that the particles and harmful substances in the mixed liquid are removed, completing the work of flue gas purification and dust removal.

[0021] 2. By draining the water in the steam generating chamber and then removing the sealing plug, the feeding screw is driven to rotate by the driving wheel. After the feeding screw rotates, it will push the sediment deposited in the foreign matter gathering tank until the sediment is pushed out from the foreign matter cleaning port, completing the cleaning of the sediment in the steam generating chamber and improving the service life and working effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Figure 2 It is a schematic diagram of the structure inside the dust removal frame of the utility model.

[0024] Figure 3 It is a schematic diagram of the structure inside the steam dust removal tank in the utility model.

[0025] In the figure, 1. Dust removal rack; 2. Filter centrifuge; 3. Steam dust removal tank; 4. Smoke inlet interface; 5. Mixed liquid chamber; 6. Steam generating chamber; 7. Steam inlet; 8. Water-gas separator; 9. Water distribution plate; 10. Liquid-steam network; 11. Steam gathering tank; 12. Halogen heating tube; 13. Steam pipe; 14. Foreign matter gathering tank; 15. Feeding screw; 16. Foreign matter cleaning port; 17. Sealing plug; 18. Drive wheel; 19. Water supply interface. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] like Figure 1-Figure 3 As shown, a boiler flue gas purification and dust removal device includes a dust removal frame 1, a filtering centrifuge 2 fixed on the dust removal frame 1, a steam dust removal tank 3 fixed on the dust removal frame 1, and a smoke inlet interface 4 connected to the inside is fixed on the steam dust removal tank 3, and a mixed liquid chamber 5 is opened in the dust removal frame 1, the mixed liquid chamber 5 is connected to the bottom opening of the steam dust removal tank 3, and a dust removal component is arranged in the steam dust removal tank 3, a steam generating chamber 6 is opened in the dust removal frame 1, a steam component is arranged in the steam generating chamber 6, a pair of steam inlets 7 connected to the inside are fixed on the steam dust removal tank 3, both steam inlets 7 are connected to the steam component, and a foreign matter cleaning component is arranged in the steam generating chamber 6, and a water vapor separator 8 is fixed to the top tank mouth of the steam dust removal tank 3.

[0028] High-temperature steam can be generated in the steam generating chamber 6 by the steam component, and then transported into the steam dust removal tank 3 through the high-temperature steam, so that the moisture in the high-temperature steam adheres to or entrains the particles and harmful substances in the flue gas, so that the moisture mass increases and falls into the mixed liquid chamber 5. In the process of steam dust removal, the harmful gases in the flue gas are also removed. Then, the mixed liquid is flowed from the mixed liquid chamber 5 into the filtering centrifuge 2, and the mixed liquid is separated into solid and liquid by the filtering centrifuge 2, so that the particles and harmful substances in the mixed liquid are removed, completing the work of flue gas purification and dust removal, and the sediment in the steam generating chamber 6 is cleaned by the foreign matter cleaning component, thereby improving the service life and working effect.

[0029] The dust removal assembly includes a plurality of arranged water distribution plates 9 fixed in the steam dust removal tank 3 . A liquid-steam net 10 is fixed in the steam dust removal tank 3 and is located at the bottom of the water distribution plates 9 .

[0030] By adopting the above structure, the mixed liquid from which harmful gases are initially removed can be evenly dropped onto the liquid-vapor network 10 through the water distribution plate 9, thereby reducing the surface tension of the water body, increasing the time the water body remains on the liquid-vapor network 10, improving the reaction effect of the secondary steam, and completing the removal of secondary harmful gases from the mixed liquid.

[0031] The steam component includes a steam gathering tank 11 opened at the top of the steam generating chamber 6, a halogen heating tube 12 fixed in the steam generating chamber 6, and a steam pipe 13 connected to the steam gathering tank 11 fixed on the dust removal rack 1. One end of the steam pipe 13 is divided into multiple branch pipes connected to the corresponding steam inlet 7.

[0032] By adopting the above structure, the water in the steam generating chamber 6 can be heated and heated by the halogen heating tube 12 to generate steam, and then the steam is sent into the steam dust removal tank 3 through the cooperation of the steam gathering tank 11 and the steam pipe 13 to realize normal steam dust removal work.

[0033] The liquid outlet of the filtering centrifuge 2 is connected to the steam generating chamber 6 via a pipeline.

[0034] By adopting the above structure, the water from which harmful substances and particles are removed by the filtering centrifuge 2 can be input into the steam generating chamber 6 for repeated use, thereby reducing resource loss.

[0035] The foreign matter cleaning component includes a foreign matter gathering groove 14 opened at the bottom of the steam generating chamber 6, a feeding screw 15 rotatably connected in the foreign matter gathering groove 14, a foreign matter cleaning port 16 connected to one end of the foreign matter gathering groove 14 is opened on the dust removal frame 1, a sealing plug 17 is filled in the foreign matter cleaning port 16, and a driving wheel 18 is rotatably connected to the dust removal frame 1, and the driving wheel 18 is coaxially fixedly connected to the feeding screw 15.

[0036] By adopting the above structure, the water in the steam generating chamber 6 can be discharged, and then the sealing plug 17 can be taken out. The driving wheel 18 can be used to drive the feeding screw 15 to rotate. After the feeding screw 15 rotates, it will push the sediment deposited in the foreign matter gathering tank 14 until the sediment is pushed out from the foreign matter cleaning port 16, thereby completing the cleaning of the sediment in the steam generating chamber 6.

[0037] A water supply interface 19 connected to the steam generating chamber 6 is fixed on the dust removal frame 1 .

[0038] With the above structure, the water in the steam generating chamber 6 can be replenished or discharged through the water replenishment interface 19 .

[0039] The working principle of the present invention is as follows: the water in the steam generating chamber 6 is heated and heated by the halogen heating tube 12 to generate steam, and then the steam is sent into the steam dust removal tank 3 through the cooperation of the steam gathering tank 11 and the steam pipe 13, so that the particles and harmful substances in the flue gas are adhered or entrained by the moisture in the high-temperature steam, and the harmful gases in the flue gas are also removed during the steam dust removal process. The water distribution plate 9 evenly drops the mixed liquid with the harmful gases removed on the liquid-steam net 10, reducing the surface tension of the water body and increasing the time the water body stays on the liquid-steam net 10, thereby improving the reaction effect of the secondary steam and completing the removal of the secondary harmful gases in the mixed liquid until the mixed liquid is It falls into the mixed liquid chamber 5, and the mixed liquid is separated into solid and liquid by the filtering centrifuge 2, so as to remove the particles and harmful substances in the mixed liquid, completing the work of flue gas purification and dust removal, and the water body from which the harmful substances and particles are removed by the filtering centrifuge 2 is input into the steam generating chamber 6 for reuse, thereby reducing resource loss, and the water in the steam generating chamber 6 is discharged, and the sealing plug 17 is taken out, and the feeding screw 15 is driven to rotate by the driving wheel 18. After the feeding screw 15 rotates, it will push the sediment deposited in the foreign matter gathering tank 14 until the sediment is pushed out from the foreign matter cleaning port 16, thereby completing the cleaning of the sediment in the steam generating chamber 6.

[0040] In summary, high-temperature steam is generated in the steam generating chamber 6 by the steam component, and then transported into the steam dust removal tank 3 through the high-temperature steam, so that the moisture in the high-temperature steam adheres to or entrains the particles and harmful substances in the flue gas, so that the moisture mass increases and falls into the mixed liquid chamber 5, and in the process of steam dust removal, the harmful gases in the flue gas are also removed, and then the mixed liquid is flowed from the mixed liquid chamber 5 into the filtering centrifuge 2, and the mixed liquid is separated into solid and liquid by the filtering centrifuge 2, so that the particles and harmful substances in the mixed liquid are removed, completing the work of flue gas purification and dust removal, and the sediment in the steam generating chamber 6 is cleaned by the foreign matter cleaning component, thereby improving the service life and working effect.

[0041] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A boiler flue gas purification and dust removal device, comprising a dust removal frame (1) and a filtering centrifuge (2) fixed on the dust removal frame (1), characterized in that: A steam dust removal tank (3) is fixed on the dust removal frame (1), and a smoke inlet interface (4) connected to the inside is fixed on the steam dust removal tank (3), and a mixed liquid chamber (5) is opened in the dust removal frame (1), the mixed liquid chamber (5) is connected to the bottom opening of the steam dust removal tank (3), and the mixed liquid chamber (5) is connected to the feed port of the filtering centrifuge (2) through a pipeline, and a dust removal component is provided in the steam dust removal tank (3), a steam generating chamber (6) is opened in the dust removal frame (1), and a steam component is provided in the steam generating chamber (6), a pair of steam inlets (7) connected to the inside are fixed on the steam dust removal tank (3), both steam inlets (7) are connected to the steam component, and a foreign matter cleaning component is provided in the steam generating chamber (6), and a water vapor separator (8) is fixed to the top tank opening of the steam dust removal tank (3).

2. A boiler flue gas purification and dust removal device according to claim 1, characterized in that: The dust removal assembly comprises a plurality of arranged water distribution plates (9) fixed in a steam dust removal tank (3), a liquid vapor network (10) fixed in the steam dust removal tank (3), and the liquid vapor network (10) is located at the bottom of the water distribution plates (9).

3. The boiler flue gas purification and dust removal device according to claim 1, characterized in that: The steam component comprises a steam gathering groove (11) provided on the top of the steam generating chamber (6), a halogen heating pipe (12) fixed in the steam generating chamber (6), a steam pipe (13) connected to the steam gathering groove (11) fixed on the dust removal frame (1), and one end of the steam pipe (13) is divided into multiple pipes connected to corresponding steam inlets (7).

4. The boiler flue gas purification and dust removal device according to claim 1, characterized in that: The liquid outlet of the filtering centrifuge (2) is connected to the steam generating chamber (6) via a pipeline.

5. The boiler flue gas purification and dust removal device according to claim 1, characterized in that: The foreign matter cleaning component comprises a foreign matter gathering groove (14) provided at the bottom of the steam generating chamber (6), a feeding screw (15) rotatably connected in the foreign matter gathering groove (14), a foreign matter cleaning port (16) communicating with one end of the foreign matter gathering groove (14) provided on the dust removal frame (1), a sealing plug (17) filled in the foreign matter cleaning port (16), and a driving wheel (18) rotatably connected to the dust removal frame (1), the driving wheel (18) being coaxially fixedly connected to the feeding screw (15).

6. The boiler flue gas purification and dust removal device according to claim 1, characterized in that: A water supply interface (19) communicating with the steam generation chamber (6) is fixed on the dust removal frame (1).

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